201111453 has 12 divisors (see below), whose sum is σ = 292101628. Its totient is φ = 133332480.

The previous prime is 201111451. The next prime is 201111481. The reversal of 201111453 is 354111102.

201111453 is a `hidden beast` number, since 201 + 1 + 11 + 453 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 101969604 + 99141849 = 10098^2 + 9957^2 .

It is not a de Polignac number, because 201111453 - 2¹ = 201111451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60100 + ... + 63357.

Almost surely, 2^201111453 is an apocalyptic number.

It is an amenable number.

201111453 is a deficient number, since it is larger than the sum of its proper divisors (90990175).

201111453 is a wasteful number, since it uses less digits than its factorization.

201111453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123644 (or 123641 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 201111453 is about 14181.3769782768. The cubic root of 201111453 is about 585.8848498441.

Adding to 201111453 its reverse (354111102), we get a palindrome (555222555).

The spelling of 201111453 in words is "two hundred one million, one hundred eleven thousand, four hundred fifty-three".